I had an issue with my iPhone's local photos and had to delete all 90,000 of them. Unfortunately, it's not possible to delete everything at once, even on a Mac. When I contacted Apple, they informed me that the only option was to manually select and delete each photo, one by one. In order to make the process easier, I used a "Super Analog" photo deletion machine that responds to touch with capacitance instead of using my finger. Thankfully, things are going well now. https://twitter.com/twyoichi/status/1751044052781502490